|Year|Division|League|Regular Season|Playoffs|Open Cup|
|---|---|---|---|---|---|
|2002|4|USL PDL|3rd, Mid Atlantic|Did not qualify|Did not qualify|
|2003|4|USL PDL|1st, Mid Atlantic|Conference Semifinals|Did not qualify|
|2004|4|USL PDL|3rd, Mid Atlantic|Did not qualify|Did not qualify|
|2005|4|USL PDL|1st, Mid Atlantic|National Semifinals|2nd Round|
|2006|4|USL PDL|5th, Mid Atlantic|Did not qualify|Did not qualify|
|2007|4|USL PDL|6th, Mid Atlantic|Did not qualify|Did not qualify|
|2008|4|USL PDL|6th, Mid Atlantic|Did not qualify|Did not qualify|

Question: what is the difference between the richmond futures kickers rank in 2003 and 2006?
Answer: 4